DE69013821D1 - Compound magneto-optical information recording media. - Google Patents

Compound magneto-optical information recording media.

Info

Publication number
DE69013821D1
DE69013821D1 DE69013821T DE69013821T DE69013821D1 DE 69013821 D1 DE69013821 D1 DE 69013821D1 DE 69013821 T DE69013821 T DE 69013821T DE 69013821 T DE69013821 T DE 69013821T DE 69013821 D1 DE69013821 D1 DE 69013821D1
Authority
DE
Germany
Prior art keywords
information recording
recording media
optical information
compound magneto
magneto
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69013821T
Other languages
German (de)
Other versions
DE69013821T2 (en
Inventor
Tooru Kitaguchi
Mikio Yoneda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Chemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Publication of DE69013821D1 publication Critical patent/DE69013821D1/en
Application granted granted Critical
Publication of DE69013821T2 publication Critical patent/DE69013821T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
DE69013821T 1989-08-31 1990-08-31 Compound magneto-optical information recording media. Expired - Fee Related DE69013821T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1224900A JP2549079B2 (en) 1989-08-31 1989-08-31 Composite magneto-optical recording medium

Publications (2)

Publication Number Publication Date
DE69013821D1 true DE69013821D1 (en) 1994-12-08
DE69013821T2 DE69013821T2 (en) 1995-06-29

Family

ID=16820915

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69013821T Expired - Fee Related DE69013821T2 (en) 1989-08-31 1990-08-31 Compound magneto-optical information recording media.

Country Status (4)

Country Link
US (1) US5700565A (en)
EP (1) EP0415443B1 (en)
JP (1) JP2549079B2 (en)
DE (1) DE69013821T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972461A (en) * 1998-01-06 1999-10-26 Imation Corp. Rewritable optical data storage disk having enhanced flatness
US6238763B1 (en) 1998-01-06 2001-05-29 Imation Corp. Rewritable optical data storage disk having enhanced flatness
JP2000222788A (en) * 1999-02-03 2000-08-11 Sony Corp Magneto-optical recording medium and its production

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59201247A (en) * 1983-04-28 1984-11-14 Ricoh Co Ltd Photomagnetic recording medium
JPS59227055A (en) * 1983-06-07 1984-12-20 Canon Inc Optical recording medium
US4670323A (en) * 1983-11-26 1987-06-02 Ricoh Company, Ltd. Magneto-optic recording medium having a metal oxide recording layer
JPS6111952A (en) * 1984-06-27 1986-01-20 Nec Corp Photoelectromagnetic recording medium
JPH0789414B2 (en) * 1986-01-31 1995-09-27 シャープ株式会社 Optical storage element
JPS6329724A (en) * 1986-07-23 1988-02-08 Agency Of Ind Science & Technol Method for controlling magnetooptical kerr effect and multilayer film having said effect controlled

Also Published As

Publication number Publication date
EP0415443B1 (en) 1994-11-02
EP0415443A2 (en) 1991-03-06
US5700565A (en) 1997-12-23
DE69013821T2 (en) 1995-06-29
JP2549079B2 (en) 1996-10-30
JPH0388151A (en) 1991-04-12
EP0415443A3 (en) 1992-09-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee